Coupling segment



FIG. 1 is an isometric view of my design for a coupling segment;

FIG. 2 is a front view of the design of the coupling segment shown in FIG. 1;

FIG. 3 is a rear view of the design of the coupling segment shown in FIG. 1;

FIG. 4 is a right side view of the design of the coupling segment shown in FIG. 1, the left view being a mirror image thereof;

FIG. 5 is a top view of the design of the coupling segment shown in FIG. 1; and,

FIG. 6 is a bottom view of the design of the coupling segment shown in FIG. 1.

The broken lines depicted in the drawings illustrates portions of the coupling segment and form no part of the claimed design. 

CLAIM The ornamental design for a coupling segment, as shown and described. 